The motor testing we did in the spring did not include gathering RPM data. There's been a task on our "to-do" list since then to upgrade the motor test stand, both to gather RPM data and to automate the test process. But that task got put on the back burner this summer to get the Version 2.5 ROV out the door.

In the near term, we've got a lot of work on the 2.5 vehicle to do- updating the documentation, working on the software, and tweaking the design of the endcaps to improve the sealing. Once those are locked down a bit, we'll probably turn back to the test stand and optimizing the motor-propeller combination.

Building and running a test stand at home would be a great way for other people to help out in advancing the design of OpenROV.